add:添加锁的工具类

This commit is contained in:
2025-12-06 09:47:42 +08:00
parent 883e4b48dc
commit 3dedbda35f

View File

@@ -0,0 +1,49 @@
package org.nl.acs.utils;
import cn.hutool.core.util.StrUtil;
import java.util.Timer;
import java.util.TimerTask;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;
public class CurrentLock {
static ConcurrentHashMap<String, ReentrantLock> clock = new ConcurrentHashMap<>();
static Timer timer = new Timer(true);
public static Boolean tryLock(String key){
synchronized (buildLock(key)){
ReentrantLock lock = clock.get(key);
if (lock == null){
ReentrantLock reentrantLock = new ReentrantLock();
clock.put(key,reentrantLock);
return reentrantLock.tryLock();
}else {
return lock.tryLock();
}
}
}
public static void unLock(String key){
System.out.println("---释放锁---");
synchronized (buildLock(key)){
ReentrantLock lock = clock.get(key);
if (lock != null){
if (lock.isLocked() && lock.isHeldByCurrentThread()){
lock.unlock();
}
}
}
}
private static String buildLock(String key) {
if (StrUtil.isEmpty(key)) {
key = "";
}
StringBuilder builder = new StringBuilder();
builder.append("currentLock.");
builder.append(key);
String lock = builder.toString().intern();
return lock;
}
}